This code is filled with out of bounds accesses now after the reverted
patch. All those base_char+1, itr+1 etc. in
evas_common_font_query_run_font_end_get() are accessing BEYOND
the end of the run. textgrid shows this instantly to fall over as it
uses single unicode codepoint chars with no nul terminator. As this
api takes an explicit run_len we should never access beyond the end of
the run_len.
Please revisit this code and keep in mind proper memory/bounds
accessing. If there was ano run_len and it assumed strings were
regular strings that had to be nul terminated... then it might be ok,
but not here.
of course if i put in guards for these +1's then it ends up in
infintie loops, so enough debugging and send it back for a rethink. :)
....
Revert "evas_object_textblock: add support for variation sequences"
This reverts commit 46f2d8acdc.
so if you use sw and gl enignes in a process and have color font
glyphs.. *BOOM* because the color glyph code used ext dat that was
intended for engines to extend with a gotcha of "only 1 engine can
extend this"... commented already.
so this unfortunately adds an extra ptr per glyph to store color data
explicitly. but now it both renders right and doesn't crash. we still
have a limit of 1 engine alone can extend glyphs with ext_dat though.
@fix
update font processing to handle variation sequences unicodes to select proper glypg in respect to variation seqences
Reviewed-by: Cedric BAIL <cedric.bail@free.fr>
Differential Revision: https://phab.enlightenment.org/D9053
Summary:
dev branch : devs/subhransu/font
The Final goal is to move the evas_font module to ector so that both ector and evas can reuse the code.
make the api simple so that sam eapi can be used by evas_textblock and ector text.
This is the 1st stage to achive that gola, first remove the evas internal dependancy as much as possible before moving to ector library.
Reviewers: jpeg, raster, herdsman, cedric, id213sin
Subscribers: cedric, jpeg
Differential Revision: https://phab.enlightenment.org/D5419
This is modifying how a rarely used environment variable that sets the
DPI used for font sizing is parsed. The previous form remains valid, of
course. Note that EFL tends to use "scaling" instead of this DPI. The
font DPI is useful for me to open up a terminology window with almost
the same size as my IDE's code viewer.
Use case:
export EVAS_FONT_DPI=95x94 terminology
Note:
I still don't get a 1:1 match with Qt's rendering, and in fact
94x95 works better than what 95x94 (which is reported by xdpyinfo).
Interesting though :)
@feature
Summary:
When evas selects a strike of embedded bitmap font,
calculate ratio and use it for scaling embedded bitmap.
@feature
Reviewers: jpeg, tasn, woohyun, raster, herdsman
Reviewed By: raster
Subscribers: charlesmilette, Francesco149, cedric
Differential Revision: https://phab.enlightenment.org/D2713
Ref T4623
v40 bytecode interpreter is official as of freetype 2.7.
The results don't look so good at the moment. The text looks and glyph
positioning seem worse than they were with the previous v35 interpreter.
So, in the meantime we'll keep using v35, just so everything looks
normal again.
Although the v40 is relevant since around 2.6.3, I rather not do any
FREETYPE_MINOR checks in this patch, because distributions might ship
previous versions with the other (v38) interpreter enabled.
This is a long awaited feature that has been requested years ago.
Fontconfig finally added the support needed to make it happen, so here
it is.
I added a fontconfig query to look for similar fonts in case we loaded a
font from eet/edje/file(no fontconfig). This now works quite well.
Still missing: if you load a bold/italic/whatever font directly (set the file)
without putting ":weight=bold" you will not get run-time emboldenment if
only non-bold fonts are found.
This unfortunately depends on very recent fontconfig version (#ifed out
when unavailable), so only people with fontconfig >= 2.11 will enjoy
this feature.
this changes the internal encoding of font glyphs in evas to use 4bit
uncompressed if small, or 4bit rle (run length encoded) if larger.
this caves at least 50% of memory on fonts - and more if bigger. with
large fonts (40-80pixel size) we can save in the region of 80% of
memory used for glyphs. this also happesn to allow speedups in
rendering too.
Try to reconnect to cserve2 if the socket connection was lost.
Resend some messages if necessary.
Images reload seems to be working.
Actually, the images don't change over time, so the clients just
keep the previous references to their images.
FONT RELOAD IS NOT WORKING:
- Crashes
- Invalid glyph data
- Infinite loop in _glyph_map_remap_check()
Root cause:
When new glyphs are requested from the server, they are added to
the mempool. So it is necessary to remap the font.
Unfortunately, in case of server reboot, we did not keep the mempool
so the old glyphs that were not requested again will not be valid.
Evas_Common.h should be used for the public header, and rather rename
evas_common.h internal header to another name.
Sa:
Evas_Common_Header.h -> Evas_Common.h
evas_common.h -> evas_common_private.h
Shouldn't have both Evas_Common.h and evas_common.h because of case
insensitive filesystems.
This reverts commit 9473c4a9a5.
This commit is not correct. It just goes through every font in the
fontset, which is usually all the fonts in the system and tries to get
their ascent/descent and by that getting the max ascent/descent. This
won't work nicely.
The solution is to properly fix textblock, if you think there's
something lacking (I.e in the same way I did text).
However, my changes did not change previous behaviour, but were just
wrappers, so I don't see why extra changes would be needed. Please
elaborate.
I'm reverting this because:
1. I don't think it's correct.
2. It severly broke e in some cases (reference:
http://www.enlightenment.org/ss/e-51b5d5e98cd387.04568822.png ).
I've tested make -j 3 install and it works nicely
I've tested expedite with software and opengl xlib,
and it works. Not tested other engines, so please
report any problems (engines or other) on the ML.
TODO: examples and tests, I'll add them later
ISSUE: Eina_Unicode size check. It indirectly depends on
eina_config.h, which is created at the end of the
configure script. So its size is always 0. I don't
know how that size is used, so I can't do a lot,
for now.
SVN revision: 78895
Elyes HAOUAS
Ali Alzyod
Carsten Haitzler
Marcel Hollerbach
Chris Michael
Jean Guyomarc'h
subhransu mohanty
Jean-Philippe Andre
Youngbok Shin
Daniel Hirt
Tom Hacohen
Sebastian Dransfeld
Vincent Torri
